2005 Yamaha YZ85 Specifications

Name: 2005 Yamaha YZ85
Brand: Yamaha

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2005 Yamaha YZ85 Overview

The 2005 Yamaha YZ85 is a cross / motocross motorcycle built around 85 cc of displacement. Under the tank sits a Single cylinder engine. The bore and stroke measures 54 x 0 mm. Scroll down for the complete 2005 Yamaha YZ85 spec sheet covering every technical detail from suspension travel to tyre sizes.

2005 YZ85 - Pros & Cons

Strengths

Factory engineering: The 2005 Yamaha YZ85 represents Yamaha's engineering at the time, with a specification built around real-world usability.

Considerations

Carburetor fuelling: Carbureted engines need occasional jetting attention and can be reluctant in cold weather or at altitude compared to modern fuel-injected alternatives.

Owner Experiences & Common Issues

Carburetor maintenance

Carburetors on the 2005 Yamaha YZ85 benefit from a clean and re-jet if the bike has been stored, run on stale fuel, or modified with an aftermarket exhaust. Owners frequently mention that fresh jets and float needle clips transforms throttle response from flat to crisp.

YZ85 - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2005 Yamaha YZ85, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained YZ85 should fire up cleanly and settle to a smooth idle within a few seconds.

Oil and filter changes

Regular oil changes are the single most important maintenance task on any YZ85. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.

Carburetor upkeep

Keep the carburetors clean and free of deposits. If the YZ85 has been stored, strip and clean the carb float bowls before attempting to start it. Pilot jets are the first to block and the last to be checked - always include them in any carb rebuild.

2005 Yamaha YZ85 - Frequently Asked Questions

What engine does the 2005 Yamaha YZ85 have?

The 2005 Yamaha YZ85 uses a Single cylinder engine with 85 cc of displacement.

How much does the 2005 Yamaha YZ85 weigh?

The 2005 Yamaha YZ85 weight is listed in the full spec table below.

What brakes does the 2005 Yamaha YZ85 have?

The 2005 Yamaha YZ85 uses Single disc at the front and Single disc at the rear.

What fuel system does the 2005 Yamaha YZ85 use?

The 2005 Yamaha YZ85 uses Carburettor, providing precise fuelling across the rev range and reliable cold-start behaviour.

What suspension does the 2005 Yamaha YZ85 have?

The 2005 Yamaha YZ85 uses Kayaba up front and Kayaba at the rear.

Yamaha YZ85 Spec Evolution

The Yamaha YZ85 was produced across 21 model years (2002-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2002	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Wet Weight	-	-	-	-	-	-	70.8 kg / 156.0 lbs	70.8 kg / 156.0 lbs	70.8 kg / 156.0 lbs	71.2 kg / 157.0 lbs	71.2 kg / 157.0 lbs	71.2 kg / 157.0 lbs	71.2 kg / 157.0 lbs	71.2 kg / 157.0 lbs	71.2 kg / 157.0 lbs	71.2 kg / 157.0 lbs	73.0 kg / 161.0 lbs	73.0 kg / 161.0 lbs	73.0 kg / 161.0 lbs	73.0 kg / 161.0 lbs	73.0 kg / 161.0 lbs
Dry Weight	66 kg / 145.5 lbs	66 kg / 145.5 lbs	-	66 kg / 145.5 lbs	66.2 kg / 146.0 lbs	66.2 kg / 146.0 lbs	-	-	-	-	210.5 kg / 464.1 lbs	59 kg / 130.1 lbs	-	-	-	-	-	-	-	-	-
Engine Detail	-	-	-	-	-	-	-	-	-	Reed-valve inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted	Reed-valve-inducted
Engine Type	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke
Seat Height	864 mm / 34.0 in.	864 mm / 34.0 in.	-	864 mm / 34.0 in.	864 mm / 34.0 in.	864 mm / 34.0 in.	864 mm / 34.0 in.	864 mm / 34.0 in.	864 mm / 34.0 in.	864 mm / 34.0 in.	864 mm / 34.0 in.	864 mm / 34.0 in.	841 mm / 33.1 in.	841 mm / 33.1 in.	841 mm / 33.1 in.	841 mm / 33.1 in.	841 mm / 33.1 in.	841 mm / 33.1 in.	841 mm / 33.1 in.	841 mm / 33.1 in.	841 mm / 33.1 in.
Fuel Capacity	-	-	-	-	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 gallons	4.92 litres / 1.30 US gallons	4.92 litres / 1.30 US gallons	4.92 litres / 1.30 US gallons	4.92 litres / 1.30 US gallons	4.92 litres / 1.30 US gallons
Bore x Stroke (in,)	1.9 x 1.9 inches	1.9 x 1.9 inches	2.1 x inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches	1.9 x 1.9 inches
Bore x Stroke (mm)	47.5 x 47.8 mm	47.5 x 47.8 mm	54.0 x 0.0 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm	47.5 x 47.8 mm

Key Specifications

Engine

Single cylinder

Power

N/A

Torque

N/A

Top Speed

N/A

Weight

N/A

Fuel Capacity

N/A

Full 2005 Yamaha YZ85 Specifications

Colours Team Yamaha Blue/White

Bore x Stroke (in,) 2.1 x inches

Bore x Stroke (mm) 54.0 x 0.0 mm

Displacement (cc) 85.00 cc

Displacement (ci) 5.19 cubic inches

Engine Type Single cylinder

Stroke 2

Fuel System Carburettor

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2005 Yamaha YZ85

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